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Young maternal age was associated with increased risk of postneonatal death in full term, healthy infants

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QUESTION: Are full term, healthy infants born to young mothers at increased risk of postneonatal death compared with infants born to adult (older) mothers?


Cohort study with ≤365 days of follow up.


United States.


1 830 350 mothers who were 12–29 years of age and delivered healthy (≥37 wks gestation, birth weight ≥2500 g), singleton infants in the US in 1996 and 1997, who survived the first 28 days after birth. Data sets were racially stratified as non-Hispanic white (1 246 863), non-Hispanic black (303 699), and Mexican-American (279 788). Multiple births, higher order births, and infants with congenital defects were excluded.

Assessment of risk factors

Maternal age ≤15 years was the main …

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  • For correspondence: Dr M G Phipps, Women and Infants Hospital of Rhode Island, Providence, RI, USA. Fax +1 401 276 7863.

  • Source of funding: no external funding.